On Windows, open Command Prompt and type `ipconfig`
On Windows, open Settings > Network & Internet > Wi-Fi or Ethernet > Hardware properties
On Windows, open Control Panel > Network and Sharing Center > Change adapter settings
On Mac, open System Settings > Network
On Mac, open Terminal and type `ifconfig`
On Linux, open Terminal and type `ip addr`
On Linux, open Terminal and type `hostname -I`
On a browser, search “what is my IP address” to view the public IP
On a router admin page, check the connected devices or WAN status
On a computer, check network details for the IPv4 address and IPv6 address